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用多元线性回归电位滴定法，同时测定两种金属离子的混合溶液并加以应用。讨论了测定原理和实验方法，选择了最佳实验条件。将其应用于自来水和石灰石中钙镁的测定，结果可达到化学分析准确度的要求。对批量样品的分析具有省时省力的特点，是很有应用前景的方法。
With multiple linear regression potentiometric titration, simultaneous determination of the mixed solution of two metal ions and to be applied. The principle of determination and experimental methods are discussed, and the best experimental conditions are selected. It is applied to the determination of calcium and magnesium in tap water and limestone, and the result can reach the requirement of chemical analysis accuracy. Analysis of batch samples with the characteristics of time-saving and labor-saving, is a promising method.